SITE.su is an online marketplace specializing in premium domain names, offering buyers and businesses a catalog of more than 40,000 domains. Its listings include keyword-based names and websites in the .ru, .su, and .рф domain zones, with options to purchase or rent. Buyers can complete purchases online, with domains transferred immediately, while rental arrangements use the customer’s DNS servers. The service also offers rentals with a guaranteed right to buy, giving customers a path to acquire a domain after leasing it.

The marketplace provides tools to browse the full catalog, search by keywords or other criteria, and download domain listings in Excel format. Individual listings display purchase and monthly rental prices, and may include details such as domain age, ratings, and search statistics. Customers can contact the seller through an online chat or a question form to ask about a domain or propose a price. SITE.su presents its service as a convenient way to find and secure domain names for online projects, with both immediate purchase and flexible rental options.